Answer:
The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015×10−34 when expressed in the unit J⋅s, which is equal to kg⋅m2⋅s−1, where the metre and the second are defined in terms of c and ΔνCs.
The correct answer is alpha
Answer:
The Solar System is the Sun and all the objects that orbit around it
The Sun is orbited by planets, asteroids, comets and other things. ...
It has strong gravity
There are many types of energies
three types are
kinetic energy
potential energy
gravitational energy
Answer:
Magnets have two poles, called north and south. The like poles are attracted to unlike poles, but like poles repel each other. For example, the north pole of one magnet is attracted to the south pole of another. ... To make objects move with a magnet attach a piece of metal, or another magnet, to it.
